Google's Logo Is An Addictive, Multi-Level Video Game To Celebrate The 50th Anniversary of 'Doctor Who'

"Doctor Who" was a science-fiction BBC TV show about a
time-traveling humanoid alien.

Today is its 50th anniversary.

To celebrate that, Google has created an interactive, multi-level
game. You choose a character and then try to beat six levels,
avoiding aliens, ghosts, and more to flip switches, obtain a
letter that spells "Google," and get back to a phone booth.
Google times you on your mission to grab all the letters.